abstract arrow ball blue christmas christmastree circle green illustration red round tree vector autumn color duck fall gold leaf leaves park wallpaper water art background black design floral flourish flower graphics plant spring yellow agricolture field hills landscape natural oak Sardinia scenery sky sun sunset branches maple maples trees twigs Forrest forrests lake mirror mirroring plants animal brown coat equine female grass gum tree hair horse image Long Neck mane mare photo she stock photo tail bright cold frost ice nature season snow snow scene white winter woods